Vulnerability · NVD

CVE-2026-23866

CVE-2026-23866, medium severity (CVSS 4.3): 2 tracked apps concerned, all fixed or indeterminable on their current version.

Severity (CVSS): 4.3
Exploitation: 0.5 %
Tracked apps: 2
Still exposed: 0

Published on 2026-05-01

Incomplete validation of AI rich response messages for Instagram Reels in WhatsApp for iOS v2.25.8.0 to v2.26.15.72 and WhatsApp for Android v2.25.8.0 to v2.26.7.10 could have allowed a user to trigger processing of media content from an arbitrary URL on another user’s device, including triggering OS-controlled custom URL scheme handlers. We have not seen evidence of exploitation in the wild.

Attack vector : Network No user interaction

Show raw CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS 0.46% exploit very unlikely percentile 37.5%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

WhatsApp Android com.whatsapp

Affected ≥2.25.8.0 ≤2.26.7.10 Fixed in > 2.26.7.10 Latest tracked 2.26.35.75 patched

Observed affected builds (14)

2.26.6.72 2.26.5.74 2.26.4.85 2.26.3.79 2.25.37.76 2.25.35.79 2.25.34.74 2.25.33.79 2.25.30.73 2.25.24.78 2.25.19.83 2.25.17.80 2.25.16.84 2.25.15.80
WhatsApp iOS ios:net.whatsapp.WhatsApp

Affected ≥2.25.8.0 ≤2.26.15.72 Fixed in > 2.26.15.72 Latest tracked 26.37.76 patched

Vulnerable CPE configurations (2)

Vendor	Product	Platform	Versions	CPE 2.3 URI
whatsapp	whatsapp Android	Android	≥2.25.8.0 ≤2.26.7.10	cpe:2.3:a:whatsapp:whatsapp::::::android::*
whatsapp	whatsapp iOS	iOS	≥2.25.8.0 ≤2.26.15.72	cpe:2.3:a:whatsapp:whatsapp::::::iphone_os::*

View on NVD ↗ Advisory · www.whatsapp.com

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